2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/196342We implement recent results of pseudo-Hermitian quantum mechanics to description of relativistic massive particle with spin-one. We derive a one-parameter family of Lorentz invariant positive-definite scalar products on the space of solutions of Proca equation.13 pages, no figuresHigh Energy Physics - Theorytext